Male kidneys for men only?

A new report is out that shows a lower level of rejection with transplants from the same gender, with the Y chromosome responsible, but female recipients of male kidneys have not had poor results.  BD 

The gender of donor and recipient plays a larger role in kidney transplants than previously assumed. Female donor kidneys do not function as well in men – due to their smaller size. Women have a higher risk of rejecting a male donor kidney. Therefore, in the future, gender should be considered more in the allocation of donor kidneys, say researchers from Basel and Heidelberg.

http://www.microsoft.com/presspass/press/2008/jul08/07-08BOSGWPCAPR.mspx